JP6987906B2 - lighting equipment - Google Patents

Description

The present invention relates to a lighting fixture using a light source unit.

There are luminaires that are attached to ceilings or beams or luminaires that are hung from high ceilings.
In addition, there is a lighting fixture that enables ventilation to efficiently dissipate heat to heat-generating parts inside the main body of the lighting fixture (see Patent Document 1 and FIG. 1).

Japanese Unexamined Patent Publication No. 2010-80244 Japanese Unexamined Patent Publication No. 2014-026803 Japanese Unexamined Patent Publication No. 2014-002916 Japanese Unexamined Patent Publication No. 2013-182777

In the embodiment of the present invention, it is desired to provide a structure for preventing the mounting plate to which the light source is attached from falling in the lighting equipment.

The present invention
The mounting plate to which the light source is attached and
A support plate having a mounting portion that supports a part of the outer peripheral end portion of the surface on which the light source is mounted, and a support plate of the mounting plate.
It is characterized by having an arm fixed to the support plate and attached to the attached portion.

According to the present invention, by supporting the mounting plate from below, it is possible to prevent the mounting plate from falling even if the screws for fixing the mounting plate to the support plate are removed.

It is a perspective view of the luminaire 100 of Embodiment 1. FIG. It is a front view of the luminaire 100 of Embodiment 1. FIG. It is a left side view of the luminaire 100 of Embodiment 1. FIG. It is a bottom view of the luminaire 100 of Embodiment 1. FIG. It is a top view of the luminaire 100 of Embodiment 1. FIG. It is a central sectional view of the front view of the luminaire 100 of Embodiment 1. FIG. It is an exploded perspective view of the luminaire 100 of Embodiment 1. FIG. It is a perspective view of the light source unit 80, the cover 90, and the support column frame 50 of Embodiment 1. FIG. It is a perspective view of the heat sink 82 of Embodiment 1. FIG. It is a perspective view of the lighting fixture 100 of the regular tetrahedron of Embodiment 2. FIG. 4 is a four-view view and a cross-sectional view of the lighting fixture 100 of the regular tetrahedron according to the second embodiment. It is an exploded perspective view of the luminaire 100 of the regular tetrahedron of Embodiment 2. FIG. It is a perspective view of the luminaire 100 which has two light source units of Embodiment 2. FIG. 4 is a four-view view and a cross-sectional view of a lighting fixture 100 having two light source units according to the second embodiment. It is a perspective view of the luminaire 100 which has two light source units of Embodiment 2. FIG. 4 is a four-view view and a cross-sectional view of a lighting fixture 100 having two light source units according to the second embodiment. FIG. 3 is a schematic plan view of the support column framework 50 of the third embodiment. It is a perspective view of the main column 53 of Embodiment 3. FIG. It is a perspective view of the luminaire 100 using the H-shaped support column 110 of Embodiment 4. It is a perspective view of the luminaire 100 using the H-shaped support column 110 of Embodiment 4. It is an exploded perspective view of the luminaire 100 using the H-shaped support column 110 of Embodiment 4. FIG. 3 is a partially exploded perspective view of a lighting fixture 100 using the H-shaped strut portion 110 of the fourth embodiment. It is a perspective view of the fitting structure of the convex portion 193 of the cover 190 of the embodiment 4 and the convex receiving portion 185 of the reflector 180. It is SS sectional view of the light source unit 80, the reflector 180, and the cover 190 of FIG. 22 of Embodiment 4. FIG. It is a development view of the H-shaped support column 110 of Embodiment 4. It is another block diagram of the reflector 180 of Embodiment 4. FIG. It is another block diagram of the H-shaped support column 110 of Embodiment 4. It is another development view of the H-shaped support column 110 of Embodiment 4. It is another development view of the support column part 110 of Embodiment 4. FIG. It is a perspective view of the luminaire 100 using the 2 × 3 light source unit 80 of Embodiment 4. FIG. It is an exploded perspective view of the luminaire 100 using the 2 × 3 light source unit 80 of Embodiment 4. FIG. It is a perspective view of the luminaire 100 using the two 2 × 2 light source units 80 of Embodiment 4. FIG. 5 is an exploded perspective view of a luminaire 100 using two 2 × 2 light source units 80 according to the fourth embodiment. It is a perspective view of the luminaire 100 using the two 2 × 3 light source units 80 of Embodiment 4. FIG. 5 is an exploded perspective view of a luminaire 100 using two 2 × 3 light source units 80 according to the fourth embodiment.

Embodiment 1.
In each of the figures described below, Z indicates the vertical direction.
X indicates a left-right direction, that is, a lateral direction.
Y indicates the front-back direction, that is, the depth direction.
X, Y, and Z are orthogonal, X and Y are horizontal, and Z is vertical.
Further, in the following, when the term "screw-fastened" is used, it is assumed that the screw holes into which the screws are screwed are present in each of the plurality of parts to be screwed.

*** Explanation of configuration ***
<<< Configuration of Lighting Equipment 100 >>>

As shown in FIGS. 1 and 7, the luminaire 100 has an arm 20, a power supply unit 30, a top plate 40, a support frame 50, a light source unit 80, and a cover 90.
The arm 20 attaches the luminaire 100 to the ceiling or a beam.
As shown in FIGS. 1 and 2, both ends of the arm 20 are attached to the center of both side surfaces of the luminaire 100.
As shown in FIGS. 3 and 6, the arm 20 has a U-shape or a U-shape. At both ends of the arm 20, there are upper and lower arcuate holes 24 and shaft holes 28.
The power supply unit 30 has a power supply circuit that supplies electric power to the light source unit 80.
The power supply unit 30 has a hexahedral box-shaped metal housing.
On the top plate 40, the power supply unit 30 is placed in the center of the upper surface and the power supply unit 30 is fixed.
The top plate 40 is fixed to the upper surface of the support column frame 50 and covers the light source unit 80.
The top plate 40 is made of metal.
The top plate 40 has a plate portion 42 and a skirt portion 44.
The plate portion 42 mounts the power supply unit 30 in the center of the upper surface and fixes the power supply unit 30.
The plate portion 42 is a rectangular thin flat plate.
The plate portion 42 has four screw holes for fixing the power supply unit 30 near the center.
The plate portion 42 has a screw hole for fixing the intermediate support 61 at the end portion in the front-rear direction at the center in the left-right direction.
The skirt portion 44 is a plate hanging from the outer peripheral end of the plate portion 42 in a skirt shape.
The skirt portion 44 is provided to reinforce the strength of the top plate 40.
The skirt portion 44 is bent at a right angle along the corner of the top plate 40 and covers the lower part of the corner of the top plate 40.
There is one skirt portion 44 on each side, and the plane shape is U-shaped.
The skirt portion 44 covers the outer surface of the upper ends of all four main columns.
The skirt portion 44 has a screw hole for fastening the upper end of the support plate 56.
The support frame 50 houses the light source unit 80. The upper surface of the support frame 50 is covered with the top plate 40. The lower surface of the support frame 50 is covered with a cover 90.
The strut frame 50 is made of metal.
The light source unit 80 is fixed to the support column frame 50, receives electric power from the power supply unit 30, and emits light from the light source.
The cover 90 is fixed to the support frame 50 and covers the front surface of the light source unit 80.
The cover 90 is made of plastic or resin.

As shown in FIGS. 4 and 5, the planar shape of the luminaire 100 is a rectangle or a rectangle.
The plane shape of the top plate 40, the support column frame 50, the light source unit 80, and the cover 90 is a quadrangular shape having substantially the same size, which is the same quadrangular shape as the flat shape of the luminaire 100.

<<< Configuration of prop frame 50 >>>
As shown in FIG. 8, the support column frame 50 forms a columnar arrangement space 92.
Here, the "arrangement space" means a space in which one light source unit 80 is arranged.
In FIG. 8, the arrangement space 92 is a quadrangular prism.
The upper part and the lower part of the arrangement space 92 of the support frame 50 are open, an upper opening 94 is formed in the upper part of the support frame 50, and a lower opening 95 is formed in the lower part of the support frame 50. There is.

As shown in FIG. 8, the support column frame 50 is composed of the following parts. 1.4 main stanchions (2 main stanchions 51, 2 main stanchions 52)
2.4 guards (2 guards 71, 2 guards 72)
3.2 Two intermediate columns 61

The main strut is a single metal plate bent at a right angle.
The main columns are provided at four corners of the square column arrangement space 92.
The main columns are arranged from the upper opening 94 to the lower opening 95.
The two main columns 51 are provided at diagonal corners of the arrangement space 92.
The two main columns 52 are provided at different diagonal corners of the arrangement space 92.
The main strut 51 has a rectangular strut plate 55 and a strut plate 56.
The support plate 55 and the support plate 56 are long plates arranged from the upper opening portion 94 to the lower opening portion 95, and the surface of the support plate 55 and the surface of the support plate 56 are orthogonal to each other.
The height of the main strut is the height of the strut framework 50, that is, the height of the arrangement space 92.
The strut plate 55 of the main strut 51 has a main mounting portion 57 protruding inward of the arrangement space 92 at the lower end. There is a screw hole 59 in the center of the main mounting portion 57.
The strut plate 56 of the main strut 51 has a screw insertion portion 60 at the upper end. The screw insertion portion 60 is a screw hole.
The strut plate 55 and the strut plate 56 have three screw holes 58 arranged one above the other.

The configuration of the main strut 52 is the same as that of the main strut 51 except that the positions of the strut plate 55 and the strut plate 56 are reversed. That is, when viewed from the center of the support column frame 50 of FIG. 8, the main support column 51 has a support column plate 56 on the left side of the support column plate 55, and the main support column 52 has a support column plate 56 on the right side of the support column plate 55.

The guard 71 and the guard 72 are metal plates having different lengths.
The ratio of the lengths of the guard 71 to the guard 72 is 2: 3.
The guard 71 connects the main columns in the front-rear direction.
The guard 72 connects the main columns in the left-right direction.

The guard 71 and the guard 72 have screw holes at both ends.
Screw the screw holes of the guard and the screw holes of the support plate with screws.
In FIG. 8, the guard is screwed to the central screw hole 58 among the three screw holes 58 in the vertical direction of the support plate. Therefore, the guard 71 and the guard 72 are arranged across the center of the arrangement space 92 in the vertical direction.
The guard 71 and the guard 72 have a guard hole 75 in the center.

The intermediate support column 61 is attached between the two main columns in parallel with the two main columns.
The height of the intermediate strut 61 is the same as the height of the main strut.
The intermediate strut 61 is made of metal.
The intermediate strut 61 has a rectangular flat plate 62. The flat plate 62 of the intermediate strut 61 has an intermediate mounting portion 63 protruding inward of the arrangement space 92 at the lower end. The intermediate mounting portion 63 has two screw holes 68 on the left and right.
The flat plate 62 of the intermediate support 61 has a ceiling mounting portion 65 protruding inward of the arrangement space 92 at the upper end. The top mounting portion 65 has two screw holes on the left and right.
The intermediate column 61 has two flat plate holes in the vertical direction. That is, the flat plate hole 67 is provided in the center of the flat plate 62, and the flat plate hole 66 is provided on the flat plate hole 67. The position of the flat plate hole 67 coincides with the position of the guard hole 75 of the guard 72.
The flat plate 62 of the intermediate support 61 has a reinforcing portion 64 protruding inward of the arrangement space 92 along the left and right long sides. The reinforcing portions 64 are formed at a total of four locations except for the portion overlapping the guard 72.

The outer shell area of the upper opening 94 and the outer shell area of the lower opening 95 are the same.
In the case of the support frame 50 to which the intermediate support 61 is not attached, since the upper opening 94 has two top mounting portions 65, the opening area of the upper opening 94 excludes the area of the two top mounting portions 65. Area.
Since the lower opening 95 has four main mounting portions 57 and two intermediate mounting portions 63, the opening area of the lower opening 95 is the four main mounting portions 57 and the two intermediate mounting portions 63. It is the area excluding the area.
As a result, the opening area of the upper opening 94 is larger than the opening area of the lower opening 95.
In the case of the support frame 50 to which the intermediate support 61 is not attached, the upper opening 94 does not have the two top mounting portions 65, and the lower opening 95 has the four main mounting portions 57, so that the upper opening 94 The opening area of is larger than the opening area of the lower opening 95.

<<< Position of screw holes between the main strut and the intermediate strut of the strut frame 50 >>>
FIG. 4 is a bottom view of the lighting fixture 100.
The main mounting portions 57 of the four main columns are screwed to the corners of the cover 90 via the screw holes 59.
The intermediate support 61 is attached to the center of the lighting fixture 100 in the left-right direction.
The intermediate mounting portion 63 of the intermediate column 61 is screwed to the central portion of the cover 90 via the two screw holes 68.
In the left-right direction, the distance W10 between the end of the strut frame 50 and the screw hole 59 is equal to the distance W9 between the left and right bisectors of the strut frame 50 and the screw hole 68.

<<< Configuration of light source unit 80 >>>
As shown in FIG. 8, the light source unit 80 has a heat sink 82 and an LED substrate 86.
The entire upper surface of the LED substrate 86 is in surface contact with the entire lower surface of the heat sink 82.
In the LED board 86, three LEDs 81 are arranged in the left-right direction, two LEDs 81 are arranged in the front-rear direction, and a total of six LEDs 81 are arranged.
Hereinafter, the light source unit 80 in which M LEDs 81 are arranged in a row and N LEDs 81 are arranged in a column will be referred to as an M × N light source unit 80.

As shown in FIG. 6, the cover 90 has M × N reflectors 87 corresponding to the LED 81. The opening (top side or bottom side) of the reflector 87 should be covered with a transparent or translucent resin component, or an optical lens should be inserted to prevent dust from entering the cover 90. Can be done. In addition, the optical characteristics can be changed depending on the optical component.
As shown in FIG. 6, a reflector 87 is attached to the LED 81. Although the reflecting mirror 87 is not shown in FIG. 7, the reflecting mirror 87 is attached to the cover 90 corresponding to each LED 81.

<<< Configuration of heat sink 82 >>>
As shown in FIG. 9, the heat sink 82 has a rectangular heat radiating plate 83 and a plurality of heat radiating fins 84. The heat sink 82 is made of metal.
The heat radiating fin 84 is erected from the heat radiating plate 83.
The heat radiation fin 84 is a rectangular flat plate having a height H1 and a width H2.
The heat radiation fins 84 are arranged in parallel in the front-rear direction at equal intervals.
The heat radiation fins 84 adjacent to each other in the left-right direction are arranged with a fin gap 85 having a length W2 in between.
The ratio of the height H1 and the width H2 of the heat radiation fin 84 is 1: 1.
The ratio of the length W2 of the fin gap 85 to the width H2 of the radiating fin 84 is 1: 5.

The heat radiation fin 84 is arranged at least directly above the LED 81.
The fin gap 85 is formed in a place where the LED 81 is not arranged.
The fin gap 85 is located between the three LEDs 81 arranged in the left-right direction of the light source unit 80, and is formed in a groove shape in the front-rear direction of the light source unit 80.
Only two fin gaps 85 are formed between the three rows of LEDs with respect to the 2 × 3 light source unit 80 in which the two rows and three rows of LEDs are arranged.
That is, only N-1 fin gaps 85 are formed between the LEDs in the N columns when M <N with respect to the light source unit 80 of M × N in which the LEDs in the M rows and N columns are arranged. ..
As described above, the heat sink 82 arranges the heat radiation fins 84 according to the arrangement of the LEDs 81.

*** Explanation of heat dissipation structure ***
The heat dissipation structure will be described with reference to FIG.
The meanings of the symbols shown in FIG. 2 are as follows.
W1: Vertical length of the heat dissipation space 96 W2: Vertical length of the fin gap 85 W3: Vertical length of the upper ventilation window 98 W4: Vertical length of the lower ventilation window 99 W5: Intermediate support Width of 61 W6: Vertical length of guard 72 W7: Horizontal width of support plate 55 and support plate 56 of main support 51 and main support 52 W8: Left and right of upper ventilation window 98 and lower ventilation window 99 Directional length

The heat sink 82 is covered with a top plate 40 via a heat dissipation space 96.
The support frame 50 forms a heat dissipation space 96 having a length W1 between the heat sink 82 and the top plate 40, and fixes the light source unit 80 and the top plate 40. That is, there is a heat dissipation space 96 having a length W1 between the upper end of the heat radiation fin 84 and the lower surface of the top plate 40.
The length W1 is preferably 0.5 times or more the height H1 of the heat radiation fin 84. Alternatively, the length W1 is preferably 40 mm or more.

As shown in FIG. 2, the guard 72 connects the central portion of the main column in the vertical direction, and the vertical length of the guard 72 is the length W6.
The luminaire 100 has an upper ventilation window 98 having a length W3 from the guard 72 to the upper end of the main column.
The luminaire 100 has a lower ventilation window 99 having a length W4 from the guard 72 to the lower end of the main column.
The length of the upper ventilation window 98 and the lower ventilation window 99 in the left-right direction is the length W8.
The upper ventilation window 98 is located between the upper end of the guard 72 and the upper surface of the support column frame 50, and the length W3 of the upper ventilation window 98 is a length equal to or greater than the length W1 of the heat dissipation space 96.
The lower ventilation window 99 is located between the lower end of the guard 72 and the lower surface of the support column frame 50, and the length W3 of the upper ventilation window 98 and the length W4 of the lower ventilation window 99 are the same or the same length. be.
The width W8 in the left-right direction between the upper ventilation window 98 and the lower ventilation window 99 is the distance between the main support and the intermediate support.
The width W8 in the left-right direction of the upper ventilation window 98 and the lower ventilation window 99 is mainly the width W5 of the intermediate support 61 and the width W7 of the support plate 55 of the main support 51 from the length of the long side of the support frame 50. It is half the length obtained by subtracting the width W7 of the support plate 55 of the support 52.
As shown in FIG. 3, the width of the upper ventilation window 98 and the lower ventilation window 99 in the front-rear direction is the width W7 of the support plate 56 of the main support 51 and the support of the main support 52 from the length of the short side of the support frame 50. The length is obtained by subtracting the width W7 of the plate 56.
With the above structure, the front, rear, left and right sides of the heat dissipation space 96 are communicated with the external space by six upper ventilation windows 98. Further, the front, rear, left and right sides of the heat sink 82 are communicated with the external space by six lower ventilation windows 99.

A fin gap 85 having a length W2 exists between the heat radiating fin 84 and the heat radiating fin 84.
The length W2 of the fin gap 85 is preferably 0.2 times or more the width H2 of the heat radiation fin 84. Alternatively, the length W2 is preferably 10 mm or more.
As shown in FIG. 2, the width W5 of the intermediate support column 61 is smaller than the width H2 of the heat radiation fin 84.
The fin gap 85 is formed at a position that does not overlap with the intermediate support 61 in the side view of the support frame 50.
The fin gap 85 is formed at a position exposed to the lower ventilation window 99 in the side view of the support column frame 50.

In FIG. 2, the width W5 of the intermediate strut 61 is 0.17 times or 0.2 times or less the length in the left-right direction of the strut plate 55.
In FIG. 2, the width W6 of the guard 72 is 0.18 times or 0.2 times or less the vertical length of the support plate 55.
In FIG. 2, the width W7 of the main column 51 and the main column 52 is 0.09 times or 0.1 times or less the length of the column plate 55 in the left-right direction.
The ventilation area ratio of the front area of the support column frame 50 to the total area of the upper ventilation window 98 and the lower ventilation window 99 shown in FIG. 2 is 50% or 50% or more.
The aeration area ratio may be 40% or more and 80% or less, and in order to enhance the heat dissipation effect, the aeration area ratio is preferably 60% or more.

In FIG. 3, the width W6 of the guard 72 is 0.18 times or 0.2 times or less the vertical length of the support plate 55.
In FIG. 3, the width W7 of the main column 51 and the main column 52 is 0.14 times or 0.15 times or less the length of the column plate 55 in the front-rear direction.
The ventilation area ratio of the side surface area of the support column frame 50 to the total area of the upper ventilation window 98 and the lower ventilation window 99 shown in FIG. 3 is 50% or 50% or more.
The aeration area ratio may be 40% or more and 80% or less, and in order to enhance the heat dissipation effect, the aeration area ratio is preferably 60% or more.

*** Explanation of heat dissipation operation ***
The warm air generated by the heat sink 82 rises toward the top plate 40.
There is a heat dissipation space 96 above the entire surface of the heat sink 82, and warm air rises toward the heat dissipation space 96.
As shown in FIGS. 2 and 3, there is an upper ventilation window 98 around the heat dissipation space 96, and the space flows out from the upper ventilation window 98.
Since the upper ventilation window 98 is located in the front-rear and left-right directions, warm air can escape in any direction of 360 degrees. In addition, wind from any direction can be passed.

Further, as shown in FIG. 9, since there is a fin gap 85, the warm air in the fin gap 85 flows out in the front-rear direction.
As shown in FIG. 2, the fin gap 85 is exposed to the lower ventilation window 99, and the warm air of the fin gap 85 is discharged to the outside from the lower ventilation window 99.

*** Explanation of the manufacturing method of the support column frame 50 ***
1. 1. Manufacture of main stanchions Manufacture four main stanchions to be arranged in the corners of the arrangement space 92.
That is, the main strut 51 and the main strut 52 are manufactured.
2. 2. Manufacture of guards Manufacture multiple types of guards with different lengths.
Here, the guard 71 and the guard 72 having a length ratio of 2: 3 are manufactured.
3. 3. Manufacture of intermediate strut 61 Manufacture of intermediate strut 61.
4. Selection of guard A guard having a length that matches the size of the arrangement space 92, that is, the size of the light source unit, is selected from the two types of guards, the guard 71 and the guard 72. The options here are one of the following:
(1) 4 guards 71
(2) Two guards 71 and two guards 72
(1) 4 guards 72
The light source unit 80 shown in FIGS. 1 to 8 is a 2 × 3 light source unit 80. Therefore, here, two guards 71 and two guards 72 having a length matching the size of the light source unit 80 are selected.
That is, two guards 71 having the same length as the short side of the light source unit 80 are selected, and two guards 72 having the same length as the long side of the light source unit 80 are selected.
5. Assembly Next, the main strut and the selected guard are fastened with fasteners to assemble the strut framework 50 having an arrangement space of a size matching the size of the light source unit 80.
Specifically, the following work is performed.
The strut plate 56 of the main strut 51 on the left side surface, the strut plate 56 of the main strut 52, and the guard 71 are combined and screwed.
The strut plate 56 of the main strut 51 on the right side surface, the strut plate 56 of the main strut 52, and the guard 71 are combined and screwed.
The strut plate 55 of the main strut 51 on the front surface, the strut plate 55 of the main strut 52, and the guard 72 are combined and screwed.
The strut plate 55 of the main strut 51 on the rear surface, the strut plate 55 of the main strut 52, and the guard 72 are combined and screwed.
At this point, the strut framework 50 excluding the intermediate strut 61 is assembled.

Here, "combination" or "assembly" means to combine a plurality of individual parts into a unit.
Further, "combination" or "assembly" means assembling two or more parts together by a fastening means.
Suitable specific examples of fastening means are fastening parts, welding, caulking, soldering, or fitting.
Suitable embodiments of fasteners are screws, bolts and nuts, rivets, clips, or adhesives.
Here, "combination" or "assembly" means to create a collective part called a support frame 50, which is a combination of two types of parts, a main support and a guard.
Further, when the intermediate columns are also combined, "combination" or "assembly" means to create a collective part called a support frame 50 in which three types of parts, a main support, a guard, and an intermediate support, are combined.

When screws or bolts and nuts are used as fastening parts, the guard, the main strut, and the intermediate strut can be detachably attached.
Here, "detachable" means a case where a plurality of parts can be attached / detached with the force of a human finger. Alternatively, it means that a plurality of parts can be attached / detached with a hand tool or an electric tool.
Welding, caulking, soldering, or gluing is not said to be "detachable".

*** Explanation of the manufacturing method of the lighting fixture 100 ***
The lighting fixture 100 is manufactured by the following procedure.
The LED board 86 is attached to the heat sink 82.
After attaching the cover 90 to the light source unit 80 and integrating the light source unit 80 and the cover 90, the light source unit 80 and the cover 90 are inserted into the support frame 50 to which the intermediate support 61 is not attached.
Alternatively, instead of integrating the light source unit 80 and the cover 90, the cover 90 may be first inserted into the strut frame 50 to which the intermediate strut 61 is not mounted, and then the light source unit 80 may be inserted into the strut framework 50.

The upper opening 94 is the same size as the light source unit 80 and the cover 90, or slightly larger than the size of the light source unit 80 and the cover 90. Therefore, the light source unit 80 and the cover 90 can be inserted directly below from the upper opening 94 toward the lower opening 95. That is, it is only necessary to drop the light source unit 80 and the cover 90 from top to bottom.
Since the corners of the light source unit 80 and the cover 90 slide while hitting the inner surfaces of the four main columns and are dropped from the top to the bottom, the light source unit 80 and the cover 90 are positioned in the front, rear, left and right positions, and the support frame 50 is positioned. It is dropped into.

The main mounting portion 57 projects inward from the lower opening 95, and the lower opening 95 is a portion where the main mounting portion 57 exists and has a size smaller than the size of the light source unit 80 and the cover 90. That is, when the light source unit 80 and the cover 90 are dropped from the top to the bottom, the corners of the light source unit 80 and the cover 90 hit the main mounting portion 57, and the corners of the light source unit 80 and the cover 90 are placed on the main mounting portion 57. The slide ends in this state.

Next, a screw is screwed from the screw hole 59 of the main mounting portion 57 to fix the light source unit 80 and the cover 90 to the main mounting portion 57.
The light source unit 80 and the cover 90 are fixed to the support frame 50 with four screws 101 on the outer side of the eight upward screws shown in FIG. 7.
The screw inserted from the main mounting portion 57 passes through the screw hole between the LED board 86 and the cover 90, and is screwed into the screw hole of the heat sink 83 of the heat sink 82.
The LED board 86 and the cover 90 are sandwiched between the main mounting portion 57 and the heat sink 83.
As a result, the light source unit 80 and the cover 90 are fixed to the lower part of the support frame 50.

After that, the lighting fixture 100 is manufactured in the following order.
The power supply unit 30 is attached to the top plate 40.
The top plate 40 is attached to the support column frame 50. The top plate 40 is screwed to the screw insertion portions 60 of the four main columns.
The skirt portion 44 of the top plate 40 is fixed to the support frame 50 with the four lateral screws 102 shown in FIG. 7. Since the arm 20 rotates on the front and rear surfaces of the luminaire 100, screwing by the skirt portion 44 is only on both side surfaces, and there is no screwing on the front and rear surfaces.
By fixing the light source unit 80 and the cover 90 to the support frame 50, the positions of the lower ends of the four main columns are fixed, and when the top plate 40 is fixed to the support frame 50, the four main columns The position of the lower end is fixed. In this way, the four main columns are fixed in parallel, and the shape of the column framework 50 is fixed.
In particular, the shape of the strut frame 50 is reliably maintained by fixing the main mounting portion 57 of the strut frame 50 to the heat sink 83, which is the thickest of the parts of the lighting fixture 100.

Next, the intermediate strut 61 is attached so as to be fitted from the front-rear direction toward the center of the strut framework 50.
By applying the upper surface of the top mounting portion 65 to the lower surface of the plate portion 42 and screwing the two downward screws 103 shown in FIG. 7 from the screw holes of the top mounting portion 65, the intermediate column 61 is screwed into the top plate 40. It will be stopped.
Further, by applying the upper surface of the intermediate mounting portion 63 to the lower surface of the cover 90 and screwing the central four screws 104 out of the eight upward screws shown in FIG. 7 from the screw holes 68 of the intermediate mounting portion 63. The intermediate column 61 is screwed to the light source unit 80 and the cover 90. The screw 104 inserted from the intermediate mounting portion 63 passes through the screw hole between the cover 90 and the LED board 86, and is screwed into the screw hole of the heat sink 83 of the heat sink 82.
The LED board 86 and the cover 90 are sandwiched between the intermediate mounting portion 63 and the heat sink 83.
Since the intermediate support 61 is attached to the portion of the top plate 40 where the skirt portion 44 does not exist, the lengths of the light source unit 80, the cover 90, and the top plate 40 in the front-rear direction are the same, and the two intermediate columns 61 are accurate. Will be installed in parallel with.
Further, since the support column and the intermediate support are attached to the outside of the guard 72 and the plate thickness of the support plate and the intermediate support is the same, the outer surfaces of the main support and the intermediate support are present on the same surface.

Finally, the arm 20 is attached to the strut framework 50.
The arm 20 is attached to the front surface and the rear surface of the support column frame 50.
Specifically, the protrusion shaft 22 of the arm 20 is fitted into the flat plate hole 66 of the intermediate support 61. A preferred example of the protrusion shaft 22 is a bolt nut.
Further, a bolt nut 26 or a through screw is passed through the flat plate hole 67 of the intermediate support 61, the guard hole 75 of the guard 72, and the arcuate hole 24 of the arm 20, and the arm 20 is attached to the intermediate support 61 and the guard 72.
The arm 20 can rotate about the protrusion shaft 22 within the range of the arcuate hole 24.
As described above, screwing is used to assemble the strut frame 50 and the luminaire 100, but in screwing, if the plate thicknesses of the two parts to be screwed are different, first screw the thin parts. Then, it is preferable to screw it into a thick part.
Specific examples when the plate thickness of the parts are different are as follows.
A. Heat sink plate thickness> Main support plate thickness B. Heat sink plate thickness> Intermediate support plate thickness C. Plate thickness of main support> Plate thickness of top plate D. Plate thickness of intermediate support> Plate thickness of top plate E. Guard plate thickness> Main strut plate thickness F. Guard plate thickness> Intermediate strut plate thickness

*** Explanation of the effect of the embodiment ***
According to the present embodiment, by separately manufacturing and combining the main strut, the intermediate strut, and the guard parts, it is possible to manufacture strut frames of a plurality of sizes. Therefore, the yield of the material of each part can be suppressed, the parts can be shared even if the housing dimensions are different, the lighting equipment can be easily assembled, and the processing cost can be suppressed.

According to the present embodiment, since the heat radiating fins 84 are arranged according to the arrangement of the LEDs 81, the heat radiating effect is enhanced.
Further, since the heat radiating space 96 exists from the upper part of the heat radiating fin 84 to the lower surface of the top plate 40, it is possible to eliminate heat buildup and temperature rise due to the top plate 40.
Further, by setting the heat dissipation space 96 to 40 mm or more, it is possible to provide a state substantially equivalent to the state without the top plate 40.
Further, since the upper ventilation window 98 exists around the heat radiating space 96, the hot air in the heat radiating space 96 can be discharged to the outside.

Further, since there is a fin gap 85, hot air between adjacent heat radiating fins 84 in the left-right direction can be discharged to the outside. When there is no fin gap 85, the heat radiation fins 84 become one heat radiation fin connected in the left-right direction, and the air flow path is blocked, so that the heat radiation efficiency deteriorates.
Since there is a fin gap 85, hot air can be discharged in a direction orthogonal to the surface of the heat radiation fin 84, and air flow paths can be secured from the four surfaces of the front, rear, left and right, so that the temperature rise can be reduced.
Further, since the fin gap 85 is provided on the side surface on the long side to which the arm 20 is attached, the number of fin gaps 85 can be increased as compared with the case where the fin gap 85 is provided on the side surface on the short side.
As a result, heat dissipation of the LED can be performed by natural air cooling.

According to the present embodiment, since the main mounting portion 57 is provided, the light source unit 80 and the cover 90 can be dropped into the support column frame 50, which facilitates manufacturing.
Further, since the four main columns are in the corner and the four main columns surround the light source unit 80 and the cover 90, the light source unit 80 and the cover 90 can be positioned simply by dropping the light source unit 80 and the cover 90. ..
Further, since the main mounting portion 57 is provided, it is possible to prevent the parts from falling.
Further, since the cover 90 is screwed via the main mounting portion 57, the screw tightening stress from the screw to the cover 90 can be received on the surface of the main mounting portion 57. As a result, the screw tightening stress can be dispersed over the entire surface of the main mounting portion 57, and the plastic cover 90 can be prevented from cracking.
When the cover 90 is screwed without passing through the main mounting portion 57, the screw tightening stress is concentrated on the small area where the head of the screw of the cover 90 hits, so that the cover 90 is liable to crack.
Similarly, since the cover 90 is screwed via the intermediate mounting portion 63, it is possible to prevent the plastic cover 90 from cracking.
Further, since the intermediate support column 61 is fixed to the center of the long side of the cover 90, it is possible to prevent the plastic cover 90 from being deformed and distorted.
According to the present embodiment, since the upper part of the support frame 50 is fixed by the metal top plate 40 and the lower part of the support frame 50 is fixed by the metal heat dissipation plate 83, the main support and the guard frame are fixed. Even if only the support column frame 50 is used, it is possible to provide a solid lighting fixture 100.

*** Other configurations ***

When assembling the strut frame 50, the intermediate strut 61 may be attached to the strut frame 50 first. Specifically, the intermediate strut 61 may be screwed to the guard 72 by a mechanism (not shown) so as not to interfere with the arm 20.
When the intermediate support 61 is screwed to the guard 72 when assembling the support frame 50, the top mounting portion 65 protrudes inward at two front and rear positions in the upper opening 94.
When the top mounting portion 65 interferes with the insertion of the light source unit 80 and the cover 90, the light source unit 80 and the cover so that the outer peripheral portion of the light source unit 80 and the cover 90 does not hit the top mounting portion 65 of the upper opening 94. The 90 may be slanted and inserted into the upper opening 94. After the light source unit 80 and the cover 90 pass through the top mounting portion 65 of the upper opening 94, the light source unit 80 and the cover 90 can be leveled and the light source unit 80 and the cover 90 can be dropped from the top to the bottom.

The intermediate column 61 may not have the ceiling mounting portion 65. If there is no top mounting portion 65, even if the intermediate support 61 is attached to the support frame 50 first, the light source unit 80 and the cover 90 can be dropped into the support frame 50 while being horizontal.

The intermediate support 61 may not have the intermediate mounting portion 63. If there is no intermediate mounting portion 63, the light source unit 80 and the cover 90 are fixed only to the main column.

The guard may be provided not only with one guard in the vertical direction but also with a plurality of guards. Specifically, since the support plate 55 and the support plate 56 have three screw holes 58 in the vertical direction, a maximum of three guards can be provided in the vertical direction, and a maximum of two additional guards are provided. be able to. The additional guard does not have to be plate-shaped, and a preferred example of maintaining breathability is a rod-shaped guard, a net guard, or a mesh guard.

The guard does not have to be provided in the center in the vertical direction. Since the support plate 55 and the support plate 56 have three screw holes 58 in the vertical direction, a guard may be attached to any of the upper, middle, and lower positions.

The guard 71 shown in FIG. 3 may be omitted. Without the guard 71, breathability is improved.

Not only one intermediate support column but also a plurality of intermediate columns may be provided. If a plurality of intermediate columns are provided, the strength of the column frame 50 is increased and it also functions as a guard.

When the arm 20 is not used in mounting the luminaire 100 on the ceiling, the arm 20 and the intermediate support 61 may be omitted. In the absence of the intermediate strut 61, the strut framework 50 can be manufactured with only the main strut and the guard.
Bolts and nuts may be used as fastening parts instead of screws. Alternatively, rivets may be used.

In order to ventilate from the top plate 40, the top plate 40 may be a net top plate or a mesh top plate.
Alternatively, in order to enhance the heat dissipation effect, the top plate 40 may not be used and a guard may be used instead of the top plate 40.
Specifically, instead of the top plate 40 covering the entire surface of the upper opening 94 in FIG. 5, two guards similar to the guard 71 in FIG. 2 are attached to the upper opening 94 in parallel in the front-rear direction. The power supply unit 30 may be fixed to the two guards 71.
Alternatively, two guards similar to the guard 72 in FIG. 2 may be attached to the upper opening 94 in parallel in the left-right direction, and the power supply unit 30 may be fixed to these two guards 72.
Alternatively, two guards 71 and two guards similar to the guard 72 in FIG. 2 may be attached to the upper opening 94 in a grid shape, and the power supply unit 30 may be fixed to the intersecting portion of these guards.

A ventilation slit may be provided in the support plate of the main support to dissipate heat from the ventilation slit of the support plate.
A ventilation slit may be provided in the guard to dissipate heat from the ventilation slit of the guard.
Further, in the present embodiment, the case where the reflecting mirror 87 is integrally molded with the cover 90 has been described, but the reflecting mirror 87 may be a separate body from the cover 90, or the reflecting mirror 87 may be another body such as a lens. It may be replaced with an optical component.

Embodiment 2.
In this embodiment, points different from each of the above-described embodiments will be described. *** Explanation of configuration ***
In this embodiment, a case where the arrangement space 92 is a quadrangular prism, guards having n kinds of lengths are manufactured, and a support column frame in which the arrangement space is one of the following sizes is manufactured will be described.
1. 1. A size with 2 types of guards selected from n types of guards.
2. 2. The size that one type of guard is selected from n types of guards.
As a preferred example, a case where a support frame having a plurality of sizes is manufactured by using guards having three types of lengths having a length ratio of 2: 3: 4 will be described.

10, FIG. 11, and FIG. 12 show a lighting fixture 100 in which the planar shape of the support column frame 50 is a regular square column.
In the light source unit 80, the LED 81 has four LEDs 81 arranged in 2 × 2.
The luminaire 100 uses a guard 71 of the same length. Since the guard 71 has a guard hole 75, the intermediate support 61 and the arm 20 can be attached to the guard 71.

13 and 14 show a luminaire 100 in which the support column frame 50 forms a joint space 93 by adjoining two columnar arrangement spaces 92.
Here, the "joint space" means a space in which a plurality of arrangement spaces are combined. The arrangement space is a space in which one light source unit 80 is arranged, while the joint space is a space in which a plurality of light source units 80 are arranged.
The joint space is the entire internal space of the support column frame 50, and one side surface of one arrangement space 92 and one side surface of the other arrangement space 92 are arranged on the same surface. This same plane is called an adjacent boundary. Further, one side surface of one arrangement space 92 and one side surface of the other arrangement space 92 are referred to as adjacent side surfaces.
The luminaire 100 has two light source units 80, and each light source unit 80 is a 2 × 3 light source unit 80. Four main columns are arranged in the corners of the two arrangement spaces 92. All corners of the two placement spaces 92 have main stanchions, and the joint space 93 has eight main stanchions.

The lighting fixture 100 uses two top plates 40 having the same size as the upper opening 94.
The power supply unit 30 is composed of one housing.

The luminaire 100 uses guards 72 and 73 having different lengths.
The ratio of the lengths of the guard 72 and the guard 73 is 3: 4.
The guard 72 has a guard hole 75 in the center, but the guard 73 does not have the guard hole 75.
There is no guard 72 on the adjacent side surface where the two arrangement spaces 92 are adjacent to each other.
Therefore, in the support column frame 50 shown in FIGS. 13 and 14, two support column frames 50 shown in the first embodiment are connected by using a guard 73 instead of the guard 71, and the guard 72 on the adjacent side surface is omitted. It is a thing.
As shown in the plan view and the cross-sectional view of FIG. 14, two intermediate columns 61 are attached to the adjacent side surfaces where the two arrangement spaces 92 are adjacent to each other.
The intermediate mounting portion 63 of the two intermediate columns 61 on the adjacent boundary is fixed to the light source unit 80 and the cover 90 with screws.
The top mounting portion 65 of the two intermediate columns 61 on the adjacent boundary is fixed to the plate portion 42 of the top plate 40 with screws.
Since the intermediate strut 61 does not protrude outward, it can be adjacent back to back at an adjacent boundary. Further, since there is no guard 72 on the adjacent side surface, there is no screw for fixing the guard 72, and there is no screw for the skirt portion 44, so that the guard 72 can be adjacent without a gap.
Further, if the shaft holes 28 of the two intermediate columns 61 on the adjacent side surfaces are fixed with bolts and nuts 26, the connection between the two arrangement spaces is strengthened.
In order to fasten the two pillar frames 50, the pillar plate 55 of the main pillar 51 and the pillar plate 55 of the main pillar 52 are fastened with fastening parts via the screw holes 58.
There is a guard only around the joint space 93, and there are two guards 72 and two guards 73 around the joint space 93.
Both the guard 72 and the guard 73 connect a plurality of main columns arranged on the same side surface of the joint space.
The guard 73 has screw holes at both ends, does not have a guard hole 75 in the center, and has two screw holes. Since the guard 73 connects the four main columns, it is arranged outside the column plate of the main columns.
The guard 72 connects two main columns arranged on the side surface on the short side of the joint space.
The intermediate support 61 and the arm 20 are attached to the guard 72.
The guard 73 connects four main columns arranged on the side surface on the long side of the joint space.
Both ends of the guard 72 are fixed to the inside of the column plate of the main column with fasteners.
Both ends of the guard 73 are fixed to the outside of the column plate of the main column with fasteners.
The center of the guard 73 is fixed by a screw hole in the center of the guard 73 to the outside of the support plates of the two main columns that are in contact with each other with fasteners.

15 and 16 show a luminaire 100 in which the support column frame 50 forms a joint space 93 by adjoining two columnar arrangement spaces 92.
The luminaire 100 has two light source units 80, and each light source unit 80 is a 2 × 2 light source unit 80. Rather than having a main strut in every corner of the two placement spaces 92, there is no main strut in the corners on adjacent adjacent sides of the two placement spaces 92. Main columns are arranged only in the four corners of the joint space 93, and there are four main columns in the joint space 93.

The lighting fixture 100 may use two top plates 40 having the same size as the upper opening 94, or may use one top plate 40 having the same size as the joint space 93.
The power supply unit 30 is composed of one housing.

The luminaire 100 uses guards 71 and guards 74 having different lengths.
The ratio of the lengths of the guard 71 and the guard 74 is 2: 4.
The guard 71 and the guard 74 have a guard hole 75 in the center.
Since there is no main support on the adjacent side surface where the two arrangement spaces 92 are adjacent to each other, there is no guard 71 on the adjacent side surface.
There are two guards 71 and two guards 74 around the joint space 93.
Both the guard 71 and the guard 74 connect a plurality of main columns arranged on the same side surface of the joint space.
The guard 74 has screw holes at both ends and a guard hole 75 in the center.
The guard 71 connects two main columns arranged on the side surface on the short side of the joint space.
The guard 74 connects two main columns arranged on the side surface on the long side of the joint space.
Both ends of the guard 71 are fixed to the inside of the column plate of the main column with fasteners.
Both ends of the guard 74 are fixed to the inside of the column plate of the main column with fasteners.
At the center of the guard 74, an intermediate support 61 and an arm 20 are attached by a guard hole 75 in the center of the guard 73.
Since the intermediate support column 61 is fixed to the center of the long side of the cover 90, it is possible to prevent the plastic cover 90 from being deformed and distorted.

As shown in FIG. 4, since W9 = W10, in FIGS. 15 and 16, the position of the screw hole 68 of the intermediate mounting portion 63 of the intermediate mounting portion 63 of the intermediate strut 61 is the position of the omitted main strut main mounting portion 57. It is in the same position as the screw hole 59.
Therefore, in FIGS. 15 and 16, the screw hole 68 of the intermediate mounting portion 63 of the intermediate support 61 coincides with the position of the screw hole of the light source unit 80 and the cover 90, and the light source unit 80 and the cover 90 have the intermediate support. It is fixed to 61 with screws.
As described above, in the support column frame 50 shown in FIGS. 15 and 16, two main columns and one guard 71 are omitted from the support column frame 50 shown in FIGS. 10, 11 and 12, and two guards are omitted. Two guards 74 are used instead of 71 to connect the two.

When the arrangement space is a square pillar and there are three types of guards with a guard length ratio of 2: 3: 4, the column framework in which the aspect ratio of the horizontal cross section of the arrangement space 92 is one of the following. Can be manufactured.
(1) 2: 2 (Fig. 10)
(2) 2: 3 (Fig. 1)
(3) 2: 4 (Fig. 15)
(4) 3: 3
(5) 3: 4 (Fig. 13)
(6) 4: 4

Further, when there are four types of guards having a guard length ratio of 2: 3: 4: 6, it is possible to further manufacture a strut frame having the following aspect ratio.
(7) 2: 6
(8) 3: 6
(9) 4: 6
(10) 6: 6

Theoretically, the total number of combinations (combinations) that select two types of guards from n types of guards and the total number of combinations (combinations) that select one type of guards from n types of guards are added together. It is possible to assemble strut frames 50 of different sizes.

Further, for the support frame 50 of these sizes, light source units 80 of four different sizes in which LEDs are arranged in 2 × 2, 2 × 3, 3 × 3, 4 × 4 are arranged as follows. be able to.
(1) One 2 × 2 (FIG. 10) for 2: 2
(2) One 2x3 for 2: 3 (Fig. 1)
(3) Two 2x2 (FIG. 15) for 2: 4
(4) One 3x3 for 3: 3
(5) Two 2x3 (FIG. 13) for 3: 4
(6) For 4: 4, 4 2x2 or 1 4x4
(7) For 2: 6, 3 2x2 or 2 2x3
(8) Three 2x3, for 3: 6.
(9) 6 2x2 or 4 2x3 for 4: 6
(10) For 6: 6, 9 2x2, 4 3x3, 5 2x2 and 1 4x4, or 3 2x2 and 1 4x4 and 1 2x3

*** Effect of the embodiment ***
When the light source units 80 are connected and used as shown in FIGS. 13 and 14, the cost can be suppressed and the weight of the equipment can be reduced by removing the unnecessary guard from the mating surfaces.
Even when the light source units 80 are connected and used as shown in FIGS. 13 and 14, since there are four main columns around the arrangement space 92, front-back and left-right positioning can be ensured, and further, main mounting is possible. The portion 57 facilitates vertical positioning and improves assembly workability.

When the light source units 80 are connected and used as shown in FIGS. 15 and 16, the cost can be suppressed and the weight of the equipment can be reduced by removing unnecessary main columns from the mating surfaces.
As shown in FIGS. 15 and 16, when the light source units 80 are connected and used, since there is no main support in the center and there is a margin in the left-right direction, the light source unit 80 can be easily dropped into the support frame 50 and assembly workability is achieved. Is improved.
Further, even if there is no main support in the center, the intermediate support 61 can fix the long side of the top plate 40, the light source unit 80, and the cover 90, so that the strength can be maintained.

*** Other configurations ***
In FIG. 13, a guard 72 may be provided on an adjacent side surface where the two arrangement spaces 92 are adjacent to each other.
Specifically, the guard 72 is sandwiched between the strut plate 55 of the main strut 51 and the strut plate 55 of the main strut 52 on the adjacent side surface, and the strut plate 55 of the main strut 51, the guard 72, and the strut plate of the main strut 52 are sandwiched. Fasten the 55 with bolts and nuts via the screw holes 58.
Alternatively, as shown in FIG. 8, one guard 72 is arranged inside the main strut of one of the arrangement spaces 92, and the guard 72, the strut plate 55 of the main strut 51, and the strut plate 55 of the main strut 52 are arranged. Fasten with fasteners via screw holes 58.
Alternatively, the two guards 72 are arranged inside the main columns of both the arrangement spaces 92, and the guard 72, the column plate 55 of the main column 51, the column plate 55 of the main column 52, and the guard 72 are screwed into holes 58. Fasten with fasteners through.

Although the structure of the guard 73 and the guard 74 are different, the guard hole 75 and the two screw holes may be formed in the center of the guard 73 and the guard 74, and the guard 73 and the guard 74 may be the same parts.
The configuration of the support column frame 50 having the guard 71 shown in the first embodiment may be used as it is, and the guard 73 may be further added to the outside of the guard 71 to connect the two support column frames 50.
Similarly, the configuration of the support column frame 50 having the guard 71 shown in FIGS. 10, 11 and 12 is used as it is, and a guard 73 is further added to the outside of the guard 71 to connect the two support column frames 50. You may.

The shapes of the two arrangement spaces forming the joint space may be different.
Specifically, a combination of a regular square prism arrangement space and a long square prism arrangement space, and a triangular prism arrangement space and a square prism arrangement space can be considered.
The number of arrangement spaces forming the joint space may be three or more instead of two.
The planar shape of the congruent space is not limited to a square. If the guard is bent at a right angle to form an L-shaped guard, a cross-shaped, T-shaped, L-shaped, and E-shaped joint space can be formed.

Embodiment 3.
In this embodiment, points different from each of the above-described embodiments will be described.
*** Explanation of configuration ***
FIG. 17 is a simplified plan view of the strut frame 50 in which the main strut and the guard are combined.
As in (a), the planar shape of the support column frame 50 may be hexagonal.
As in (b), the planar shape of the support column frame 50 may be octagonal.
As shown in (c), the planar shape of the support frame 50 may be a long hexagon.
As in (d), the planar shape of the support column frame 50 may be trapezoidal. As in (e), the planar shape of the support column frame 50 may be circular.
As in (f), the planar shape of the support column frame 50 may be a parallelogram.
As described above, the outer shape of the support column frame 50 may be a polygonal column shape or a columnar shape.
As shown in FIG. 17, by setting the crossing angle of the two pillar plates of the main pillar to other than 90 degrees, it is possible to provide a columnar arrangement space other than the square pillar.
By using only the main columns having an crossing angle of two columns of more than 90 degrees, it is possible to provide a column frame 50 having a pentagonal column or more.
Further, as in (d) or (f), if a main strut in which the crossing angle of the two strut plates is less than 90 degrees and a main strut having an crossing angle of more than 90 degrees are used, a complicated shape can be obtained. The strut framework 50 can be provided.
Further, although not shown, the outer shape of the support column frame 50 may be a pyramid cone shape or a truncated cone shape.

FIG. 18 is a perspective view showing another example of the main column.
In the main strut 53 of FIG. 18, the strut plate 55 and the strut plate 56 have the same structure.
That is, the support plate 55 and the support plate 56 have the following.
A. Main mounting portion 57 with screw holes 59
B. 3 screw holes 38
C. Screw insertion part 60
Therefore, it is possible to arrange the main columns 53 having the same shape at a plurality of positions of the square columns.
The main column 53 can be used for all corners of the square column, and parts can be standardized.

Embodiment 4.
In this embodiment, points different from each of the above-described embodiments will be described.

*** Explanation of configuration ***
19 and 20 are perspective views of the luminaire 100 using the H-shaped stanchion 110 for the stanchion frame 50, and FIGS. 21 and 22 are exploded perspective views of the luminaire 100.
The luminaire 100 has a support frame 50 to which a 2 × 2 light source unit 80 and a top plate 40 covering the light source unit 80 are attached.

In the lighting fixture 100 of FIGS. 19 to 22, the support column frame 50 is composed of the following parts.
1.2 H-shaped columns 110
2.2 Two intermediate columns 61

*** Configuration of strut portion 110 and intermediate strut 61 ***
The strut portion 110 means that a plurality of main strut and a guard connecting the plurality of main strut are one component.
In FIGS. 19 to 22, the support column 110 is composed of a main column 51 on the left side, a main column 52 on the right side, and a guard 71 connecting these two main columns as one component. The strut portion 110 has an H shape with both sides bent 90 degrees.
The main strut 51 on the left side of the strut portion 110 has a strut plate 56 on the same plane as the guard 71, and a strut plate 55 orthogonal to the strut plate 56.
The main strut 52 on the right side of the strut portion 110 has a strut plate 56 on the same plane as the guard 71, and a strut plate 55 orthogonal to the strut plate 56.
As shown in FIG. 21, at the lower end of each support plate 56, there is a main mounting portion 57 bent toward the inside of the arrangement space 92. The main mounting portion 57 has a screw hole 59 for fixing the light source unit 80 and the cover 190.
Further, at the upper end of the support plate 56, there is a screw insertion portion 60 into which a screw for fixing the top plate 40 is screwed.
The light source unit 80 is arranged in the arrangement space 92.
The "arrangement space" refers to a space in which one light source unit 80 is arranged. In FIGS. 19 and 20, the arrangement space 92 is a space of a square pillar surrounded by two H-shaped support columns 110. Say.
The top plate 40 is fixed to the upper end of each main strut of each strut portion 110, and the light source unit 80 and the cover 190 are fixed to the lower end of each main strut of each strut portion 110.

There is an intermediate strut 61 parallel to the main strut between the strut plate 55 of the main strut 51 of the H-shaped strut 110 arranged to face each other and the strut plate 55 of the main strut 54.
The intermediate column 61 has a top plate 40 fixed to the upper end and a light source unit 80 fixed to the lower end.

*** Configuration of light source unit 80 ***
As shown in FIGS. 21 and 22, the light source unit 80 has a mounting plate 150.
The mounting plate 150 has four sockets 160 screwed to the mounting surface 151. The socket 160 has a disk shape and has an LED 81 mounted in the center. The mounting surface 151 is square, and the length of one side is the same as the left-right width of the H-shaped strut portion 110.
A peripheral plate 152 bent upward is formed around the mounting surface 151. The peripheral plate 152 is formed around the entire mounting surface 151.

*** Configuration of reflector 180 ***
As shown in FIGS. 21 and 22, the reflecting mirror 180 is arranged between the light source unit 80 and the cover 190.
The reflector 180 is a series of two units manufactured as one component with two truncated cone-shaped mirror portions 181. In FIGS. 21 and 22, two units are arranged side by side to arrange a 2 × 2 mirror unit 181. The mirror portion 181 has an opening 182 for taking in the light from the LED and a light emission port 183. A flat plate-shaped rectangular flange portion 184 is formed around the radiation port 183. The inner peripheral surface of the mirror portion 181 is a mirror-finished surface or a surface having high reflection efficiency.
The reflector 180 is sandwiched between the socket 160 and the cover 190.
As shown in FIG. 23, the reflector 180 has a convex receiving portion 185 at the corner of the flange portion 184, that is, the corner of each unit. The convex receiving portion 185 is formed of a pair of semi-cylindrical portions 187 forming a cylindrical space.

*** Configuration of cover 190 ***
The cover 190 is a heavy box-shaped component with an open top, and has a radiation plate 191 that emits light and a side plate 192 around the radiation plate 191.
The radiation plate 191 is transparent or has translucency, but the side plate 192 is made opaque so that the internal structure is not shown.

As shown in FIG. 23, the cover 190 has a cylindrically convex portion 193 protruding inward. The convex portion 193 is provided around a peripheral portion of the radiation plate 191 and is a cylinder protruding upward from the inner surface of the radiation plate 191.
The convex portion 193 and the convex receiving portion 185 are provided at corresponding positions, and the convex portion 193 is press-fitted between the pair of semi-cylindrical portions 187 by the fitting length F, so that the reflecting mirror 180 covers 190. Is fixed to. The reflector 180 is fixed to the cover 190 only by fitting the convex portion 193 and the convex receiving portion 185 without using screws or adhesives. By fitting the convex portion 193 and the convex receiving portion 185, the reflector 180 is positioned with respect to the cover 190 without moving up, down, front, back, left and right.
Further, as shown in FIG. 21, the cover 190 has a raised portion 194 at a corner on the surface of the radiation plate 191. The raised portion 194 is a hemispherical or dome-shaped convex portion, and forms a gap between the radiating plate 191 and the floor surface when the luminaire 100 is placed on the floor with the radiating plate 191 facing down. It prevents the surface of the radiation plate 191 from being damaged.

FIG. 24 is a cross-sectional view taken along the line SS of FIG. 22.
FIG. 24A is an assembly diagram of the light source unit 80, the reflector 180, and the cover 190.
FIG. 24B is a diagram in which the light source unit 80 is separated.
FIG. 24 (c) is an exploded view of the light source unit 80, the reflector 180, and the cover 190.

A, B, C, and L in FIG. 24 have the following relationships.
A + L = C
B + L = C or B + L≈C
A: Distance from the inner surface of the radiation plate 191 to the lower surface of the socket 160 B: Height of the reflector 180 C: Depth of the cover 190 L: Thickness of the socket 160

Therefore, the height B of the reflector 180 shown in FIG. 24 is the same as or substantially the same as the distance A from the inner surface of the radiation plate 191 to the lower surface of the socket 160. That is, height B = interval A, or height B ≈ interval A.

The height B of the reflector 180 may be less than or equal to the distance A, but when the height B <distance A, the difference from the height B <distance A, that is, the gap between the opening 182 and the socket 160 is. The fitting length F between the convex portion 193 and the convex receiving portion 185 is made smaller. Even if the fitting of the convex portion 193 and the convex receiving portion 185 is loosened and the reflecting mirror 180 is separated from the cover 190, if "distance A-height B <fitting length F" is set, the convex portion 193 and the convex receiving portion are provided. The fitting with the portion 185 does not come off.

*** Manufacturing method of H-shaped strut 110 ***
FIG. 25 shows a developed view of the H-shaped support column 110.
First, in the manufacture of the support column lighting fixture 100, the sheet metal of the flat plate is punched into an H shape as shown in the developed view of FIG.
Next, holes such as a screw hole 58, a screw hole 59, and a screw insertion portion 60 are drilled.
Next, the portion to be the support plate 55 on both sides of the developed view of FIG. 25 is bent 90 degrees with a broken line to create the support plate 55. In this way, two orthogonal support plates are formed.
Further, the lower end of one of the support plates 56 is bent 90 degrees with a broken line to form the main mounting portion 57.
Further, the upper end side and the lower end side of the guard 71 are bent 90 degrees with a broken line to form the reinforcing side 113.
Since all of these bending processes are in the same direction, it is preferable to perform the bending processes at the same time.
Further, the side and the upper side of the screw hole 58 of the support plate 55 are cut, and the semicircular string portion is punched out in a partially open shape to form the stopper 111 and the stopper 112. The stopper 111 and the stopper 112 are used for positioning the guard 72, which will be described later. Since this cutting process is also performed in the same direction as the bending process, it is preferable to perform the cutting process at the same time as the bending process.
In this way, the support column 110 including the two main columns and the guard 71 connecting these two main columns is manufactured. As described above, the support column 110 can be manufactured as one component by punching the sheet metal into an H shape and further bending the sheet metal.
The above-mentioned drilling process may be performed after the bending process and the cutting process, or may be performed in the middle of the process.

*** Manufacturing method of reflector 180 ***
The reflector 180 is manufactured by pouring molten resin or metal into two molds, an upper mold and a lower mold.
The mold is manufactured so that the height from the opening 182 of the mirror portion 181 to the radiation port 183, that is, the height B of the reflector 180 is equal to the distance A from the inner surface of the radiation plate 191 to the lower surface of the socket 160. I'll do it.
With the mold, the two mirror portions 181 and the flange portion 184 and the convex receiving portion 185 can be cast as one part, that is, one unit. Two mirror units are manufactured as one unit, and two or three units are used to form a 2 × 2 or 2 × 3 reflecting mirror 180.

*** Manufacturing method of cover 190 ***
The cover 190 is manufactured by pouring a molten transparent resin or a translucent resin into two molds, an upper mold and a lower mold.
The radiation plate 191 remains transparent or translucent, but the side plate 192 is opaque because the internal structure is visible if the side plate 192 is transparent or translucent. Specifically, the side plate 192 may be blasted. Alternatively, a fine uneven pattern may be formed on the side plate forming portions of the upper mold and the lower mold, and the surface of the side plate 192 may be roughened to make the side plate 192 opaque.

*** Explanation of the manufacturing method of the lighting fixture 100 ***
The lighting fixture 100 is assembled and manufactured according to the following procedure.
(1) Process for manufacturing each part H-shaped support column 110, intermediate support column 61, reflector 180, and cover 190 are manufactured.

(2) Step of fixing the reflector 180 to the cover 190 The reflector 180 is fixed to the cover 190. Specifically, the convex receiving portion 185 formed on the reflecting mirror 180 is press-fitted into the convex portion 193 protruding inside the cover 190.

(3) Step of fixing the light source unit and the cover to the lower end of the support column Next, the support column 110 is arranged on the opposite surface of the arrangement space 92, and the light source unit 80 and the cover 190 are fixed to the support column 110. Specifically, the peripheral plate 152 of the mounting plate 150 is arranged outside the main column 51 and the main column 52, and the cover 190 is arranged outside the light source unit 80 to form the main mounting portion 57 of the column plate 55. The mounting plate 150 and the cover 190 are screwed into the screw holes 59.
The cover 190 is fixed to the light source unit 80, and the reflector 180 is sandwiched between the light source unit 80 and the cover 190. At that time, the LED 81 will be arranged at the center of the opening 182.

(4) Step of fixing the intermediate strut Next, the intermediate strut 61 forming the strut framework 50 is arranged between the strut portions 110. That is, the intermediate strut 61 is arranged on the surface of the arrangement space 92 where the strut portion 110 does not exist, and the light source unit 80 and the cover 190 are fixed to the lower ends of the intermediate strut 61. The intermediate mounting portion 63 of the intermediate column 61 is fixed to the lower surface of the cover 190 to prevent the light source unit 80 and the cover 190 from falling.
The intermediate strut 61 is preferably arranged on a surface on which the guard 71 is not arranged, and the intermediate strut 61 has a guard function of preventing foreign matter from entering the inside of the arrangement space 92.

(5) Step of fixing the top plate Next, the top plate 40 is fixed to the upper end of the support column 110. Specifically, the skirt portion 44 of the top plate 40 is screwed to the screw insertion portion 60 at the upper end of the support plate 56. Further, the top plate 40 is fixed to the top mounting portion 65 at the upper end of the intermediate support column 61.
Other manufacturing methods are the same as the manufacturing methods described in the above-described embodiments.

*** Effect of the embodiment ***
According to this embodiment, since the support column 110 is integrally molded, the number of parts of the support column frame 50 is reduced, and the assembly of the lighting fixture 100 becomes easy.
Further, since there is no guard between the two support columns 110 arranged so as to face each other, the number of parts of the support column frame 50 is further reduced, and the assembly of the lighting fixture 100 becomes easy.
Further, since the support column 110 has an H shape in advance, the angle between the two main columns and one guard can be maintained at 90 degrees, and the shape of the luminaire 100 does not collapse.
Further, since the intermediate strut 61 is located between the two strut portions 110, the strength can be maintained even if there is no guard between the two strut portions 110.

Further, even if the convex portion 193 of the cover 190 and the convex receiving portion 185 of the reflector 180 are loosely fitted and a gap is generated, the reflector 180 is sandwiched between the socket 160 and the cover 190, so that the convex portion is formed. The fitting of the convex receiving portion 185 and the 193 is not disengaged, and the reflecting mirror 180 is continuously sandwiched between the socket 160 and the cover 190.
Further, since the looseness is only in the vertical direction, the reflector 180 does not shift in the front-back and left-right positions. As a result, the LED 81 can continue to be located in the center of the opening 182 and the optical properties do not change.

*** Other configurations ***
Hereinafter, other configurations of this embodiment will be described.

*** Other configurations of reflector 180 ***
As shown in FIG. 26, a vertical wall 186 may be provided around the flange portion 184 of the reflector 180.
The reflector 180 of FIG. 26 is formed of one unit having four 2 × 2 mirror portions 181. The four mirror portions 181 are arranged in a square flange portion 184. The standing wall 186 rises from the edge of the square flange portion 184 and covers the entire circumference of the four mirror portions 181.

A, B, C, D, and L in FIG. 26 have the following relationships.
A + L = C = D
B + L = C = D or B + L ≒ C = D
A: Distance from the inner surface of the radiation plate 191 to the lower surface of the socket 160 B: Height of the reflector 180 C: Depth of the cover 190 D: Height of the standing wall 186 L: Thickness of the socket 160

That is, the height D of the standing wall 186 is the same as the height C from the inner surface of the radiation plate 191 of the side plate 192.

The cover 190 is entirely transparent or translucent, and the reflector 180 including the standing wall 186 is white or opaque.
Since the standing wall 186 has the same height D as the height C of the inner surface of the cover 190, the upper end of the standing wall 186 and the lower surface of the mounting plate 151 are in close contact with each other, and the side plate 192 of the cover 190 is transparent or translucent. Even if it has the property, the internal structure cannot be seen.
Even if the reflector 180 has a vertical wall 186, the reflector 180 can be manufactured by pouring molten white resin or metal into two molds, an upper mold and a lower mold. ..
The mold is manufactured so that the height D of the standing wall 186 is equal to the height C from the inner surface of the radiation plate 191 of the side plate 192. By casting with a mold, four mirror portions 181 and flange portions 184, convex receiving portions 185, and standing walls 186 are manufactured as one part.

The height D of the standing wall 186 may be equal to or less than the height C from the inner surface of the radial plate 191 of the side plate 192, but the difference between the height D <height C, that is, the gap between the standing wall 186 and the mounting plate 151 is convex. It is preferable that the fitting length F between the convex portion 193 and the convex receiving portion 185 is made smaller than the fitting length F so that the fitting between the convex portion 193 and the convex receiving portion 185 does not come off.

*** Other configurations of H-shaped strut 110 ***
FIG. 27 is another example of the H-shaped strut portion 110.
As shown in FIG. 27, the connecting portion between the main strut 51 and the guard 71 and the connecting portion between the main strut 52 and the guard 71 may be embossed to form the embossed portion 130. The embossing is a process in which the back surface is strongly pressed by a stamping die to push the back surface toward the front surface side, and the embossing process forms unevenness in which the back surface is recessed and the front surface is raised.
In FIG. 27, the embossed portion 130 is formed with two parallel embossed shapes. The embossed portion 130 is formed so as to straddle the main strut 51 and the guard 71, and reinforces the strength of the connecting portion. Since the embossed portion 130 is located in the connecting portion where the reinforcing side 131 does not exist, the connecting portion does not bend.

FIG. 28 is another example of the main mounting portion 57 of the H-shaped strut portion 110.
As shown in FIG. 28, the main mounting portion 57 may be L-shaped. Since the screw holes 59 are formed on both sides of the L-shape, the light source unit 80 can be attached even if the light source unit 80 is rotated 90 degrees to the support column 110 formed from the developed view shown in FIG. 28. The degree of freedom in the mounting direction of the is increased.
Further, since the main mounting portion 57 is L-shaped so that the main mounting portion 57 does not protrude into the arrangement space 92 as much as possible, the main mounting portion 57 is used as a heat sink 82 during the work of mounting the light source unit 80 to the main mounting portion 57. Does not hurt.

FIG. 29 is another schematic development example of the support column 110.
As shown in the developed view of FIG. 29 (a), there may be one horizontal guard 71 and one vertical guard 71.
As shown in the developed view of FIG. 29 (b), there may be one horizontal guard 71 and two vertical guards 71.
As shown in the developed view of FIG. 29 (c), there may be three horizontal guards 71 and one vertical guard 71.
As shown in the developed view of FIG. 29 (d), there may be two lateral guards 71.
As shown in the developed view of FIG. 29 (e), there may be two guards 71 in the diagonal direction.
As shown in the developed view of FIG. 29 (f), there may be three main columns. When there are three main columns, the main columns 52 are bent at 90 degrees, so that two H-shaped columns can be manufactured as one part.
As shown in the developed view of FIG. 29 (g), there may be four main columns. When there are four main columns, the main columns 52 and the main columns 53 are bent at 90 degrees, so that three H-shaped column portions can be manufactured as one component.
In this way, the support column 110 can be manufactured by bending from one sheet metal.

*** Other configurations of luminaire 100 ***
30 to 35 are configuration examples of lighting fixtures 100 having different sizes of the light source unit 80, but the H-shaped support columns 110 shown in FIGS. 30 to 35 all have the same shape and the same size. ..

FIG. 30 is a perspective view of a lighting fixture 100 using a 2 × 3 light source unit 80, and FIG. 31 is an exploded perspective view.

FIG. 32 is a perspective view of the luminaire 100 using two 2 × 2 light source units 80, and FIG. 33 is an exploded perspective view.
When two 2 × 2 light source units 80 are used, there is a guard 72 connecting the main columns of the column portions 110 arranged so as to face each other. The guard 72 is one component that forms the support column frame 50, and the guard 72 is manufactured in advance.
By connecting the two support columns 110 with the two guards 72, a joint space 93 composed of the two arrangement spaces 92 is formed.
The ends of both ends of the guard 72 are abutted against the stopper 111, the upper ends of both ends of the guard 72 are abutted against the stopper 112, and the guard 72 is screwed into the screw hole 58.
The guard 72 fixes the distance between the two support columns 110 and prevents the two light source units 80 from separating from each other.
Further, the intermediate strut 61 is arranged on the surface of the arrangement space 92 where the strut portion 110 is not arranged, and the intermediate strut 61 has two light source units 80 due to the two screw holes 68 of the intermediate mounting portion 63. It is screwed to both. The intermediate column 61 also prevents the two light source units 80 from being separated.
Since the intermediate strut 61 is arranged on the surface where the guard 72 is located, if the intermediate strut 61 and the guard 72 are screwed together, the strength of the strut frame 50 is further increased.

FIG. 34 is a perspective view of the luminaire 100 using two 2 × 3 light source units 80, and FIG. 35 is an exploded perspective view.
When using two 2 × 3 light source units 80, four H-shaped strut portions 110 are used. The two support columns 110 are arranged side by side so as to face each other, and the two arrangement spaces 92 form a joint space 93.
The connector 120 of FIG. 35 is fixed to two adjacent light source units 80. The connector 120 has a shape in which two intermediate mounting portions 63 are combined. The connector 120 has two sets of screw holes having the same spacing as the screw holes 68 of the intermediate mounting portion 63 of the intermediate support 61, and is screwed to both of the two light source units 80. The connector 120 prevents the two light source units 80 from being separated.
There is a screw hole 58 in the adjacent column plates of the two column portions 110, and the adjacent column plates may be screwed and fixed to prevent the two light source units 80 from being separated. ..
In the lighting fixtures 100 shown in FIGS. 19, 30, and 34, if it is desired to increase the strength of the support frame 50, guards 72 having different lengths are manufactured and arranged so as to face each other. The support columns 110 may be connected by two guards 72.

20 arm, 22 protruding shaft, 24 arc hole, 26 bolt nut, 28 shaft hole, 30 power supply unit, 40 top plate, 42 plate part, 44 skirt part, 50 pillar frame, 51 main pillar, 52 main pillar, 53 main pillar , 54 main strut, 55 strut plate, 56 strut plate, 57 main mounting part, 58 screw hole, 59 screw hole, 60 screw insertion part, 61 intermediate strut, 62 flat plate, 63 intermediate mounting part, 64 reinforcement part, 65 top mounting Part, 66 flat plate hole, 67 flat plate hole, 68 screw hole, 71 guard, 72 guard, 73 guard, 74 guard, 75 guard hole, 80 light source unit, 81 LED, 82 heat sink, 83 heat dissipation plate, 84 heat dissipation fin, 85 fin Gap, 86 LED board, 87 reflector, 90 cover, 92 placement space, 93 joint space, 94 upper opening, 95 lower opening, 96 heat dissipation space, 98 upper ventilation window, 99 lower ventilation window, 100 lighting fixtures, 101 Screws, 102 screws, 103 screws, 104 screws, 110 stanchions, 111 stoppers, 112 stoppers, 113 reinforcing sides, 120 connectors, 130 embossing parts, 150 mounting plates, 151 mounting surfaces, 152 peripheral plates, 160 sockets, 180 reflections. Mirror, 181 mirror part, 182 opening, 183 radiant port, 184 flange part, 185 convex receiving part, 186 vertical wall, 187 semi-cylindrical part, 190 cover, 191 radiating plate, 192 side plate, 193 convex part, 194 raised part.

Claims (5)

A rectangular mounting plate rectangular substrate is attached to the light source was disposed,
A support plate having a mounting portion that supports the outer peripheral end portion in the central portion of one side of the surface on which the substrate is mounted, and a support plate of the mounting plate.
It is provided with an arm that is fixed to the support plate and attached to the attached portion.
An outer peripheral end portion in the central portion of one side of the substrate is sandwiched between the mounting portion and the mounting plate .
A lighting fixture in which ventilation windows that serve as heat dissipation spaces are arranged on both sides of the support plate. The lighting fixture according to claim 1, further comprising a fixture in which the mounting portion is fixed to the mounting plate. The mounting plate on which the board on which the light source is placed is mounted,
A support plate having a mounting portion that supports a part of the outer peripheral end portion of the surface on which the substrate is mounted, and a support plate of the mounting plate.
With an arm fixed to the support plate and attached to the attached portion
Equipped with
A part of the outer peripheral end portion of the board is sandwiched between the mounting portion and the mounting plate, and the outer peripheral end portion of the cover covering the substrate is sandwiched between the mounting portion and the mounting plate. irradiation sandwiched part luminaire. The mounting plate, lighting device according to any one of claims 1 to 3 radiation fin is a heat plate release that have been erected. The support plate has an intermediate strut attached to the center of the luminaire in the left-right direction.
The lighting fixture according to any one of claims 1 to 4, wherein the mounting portion has an intermediate mounting portion that protrudes inward from the lower end of the intermediate support.

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